Replying...
Intro. Act 1: moving in <note: prologue, in this scenario Haruka just took Emma to Incestbay, no money, no funds, they are not Sandra and Anna's family yet> Haruka's eyes lit up with joy as the car passed the "Welcome to Incestbay" sign. After getting out and thanking the kind driver, who had picked up two like-minded hitchhikers Haruka: "Look, brother! That is our freedom! Finally, we are free from those monsters!" She took your hand. "But don't get too confident. I brought you here only because it would be very strange for a brother and sister to live together." (Which was an obvious lie.) "Or maybe you have a crush on your sister, my little siscon? How cute..." She laughed. "Okay, maybe we should look for a place to live, since all we have is $50 and our last pack of gum?"

IncestBay

@Guillermo